766 

14 CFR Ch. I (1–1–14 Edition) 

§ 29.812 

must meet the requirements for emer-
gency exits of the particular type. 
Emergency exits need only be marked 
with the word ‘‘Exit.’’ 

[Amdt. 29–3, 33 FR 968, Jan. 26, 1968, as 
amended by Amdt. 29–24, 49 FR 44438, Nov. 6, 
1984; Amdt. 27–26, 55 FR 8004, Mar. 6, 1990; 
Amdt. 29–31, 55 FR 38967, Sept. 21, 1990] 

§ 29.812

Emergency lighting. 

For transport Category A rotorcraft, 

the following apply: 

(a) A source of light with its power 

supply independent of the main light-
ing system must be installed to— 

(1) Illuminate each passenger emer-

gency exit marking and locating sign; 
and 

(2) Provide enough general lighting 

in the passenger cabin so that the aver-
age illumination, when measured at 40- 
inch intervals at seat armrest height 
on the center line of the main pas-
senger aisle, is at least 0.05 foot-candle. 

(b) Exterior emergency lighting must 

be provided at each emergency exit. 
The illumination may not be less than 
0.05 foot-candle (measured normal to 
the direction of incident light) for min-
imum width on the ground surface, 
with landing gear extended, equal to 
the width of the emergency exit where 
an evacuee is likely to make first con-
tact with the ground outside the cabin. 
The exterior emergency lighting may 
be provided by either interior or exte-
rior sources with light intensity meas-
urements made with the emergency 
exits open. 

(c) Each light required by paragraph 

(a) or (b) of this section must be oper-
able manually from the cockpit station 
and from a point in the passenger com-
partment that is readily accessible. 
The cockpit control device must have 
an ‘‘on,’’ ‘‘off,’’ and ‘‘armed’’ position 
so that when turned on at the cockpit 
or passenger compartment station or 
when armed at the cockpit station, the 
emergency lights will either illuminate 
or remain illuminated upon interrup-
tion of the rotorcraft’s normal electric 
power. 

(d) Any means required to assist the 

occupants in descending to the ground 
must be illuminated so that the erect-
ed assist means is visible from the 
rotorcraft. 

(1) The assist means must be pro-

vided with an illumination of not less 
than 0.03 foot-candle (measured normal 
to the direction of the incident light) 
at the ground end of the erected assist 
means where an evacuee using the es-
tablished escape route would normally 
make first contact with the ground, 
with the rotorcraft in each of the atti-
tudes corresponding to the collapse of 
one or more legs of the landing gear. 

(2) If the emergency lighting sub-

system illuminating the assist means 
is independent of the rotorcraft’s main 
emergency lighting system, it— 

(i) Must automatically be activated 

when the assist means is erected; 

(ii) Must provide the illumination re-

quired by paragraph (d)(1); and 

(iii) May not be adversely affected by 

stowage. 

(e) The energy supply to each emer-

gency lighting unit must provide the 
required level of illumination for at 
least 10 minutes at the critical ambient 
conditions after an emergency landing. 

(f) If storage batteries are used as the 

energy supply for the emergency light-
ing system, they may be recharged 
from the rotorcraft’s main electrical 
power system provided the charging 
circuit is designed to preclude inad-
vertent battery discharge into charg-
ing circuit faults. 

[Amdt. 29–24, 49 FR 44438, Nov. 6, 1984] 

§ 29.813

Emergency exit access. 

(a) Each passageway between pas-

senger compartments, and each pas-
sageway leading to Type I and Type II 
emergency exits, must be— 

(1) Unobstructed; and 
(2) At least 20 inches wide. 
(b) For each emergency exit covered 

by § 29.809(f), there must be enough 
space adjacent to that exit to allow a 
crewmember to assist in the evacu-
ation of passengers without reducing 
the unobstructed width of the passage-
way below that required for that exit. 

(c) There must be access from each 

aisle to each Type III and Type IV exit, 
and 

(1) For rotorcraft that have a pas-

senger seating configuration, excluding 
pilot seats, of 20 or more, the projected 
opening of the exit provided must not 
be obstructed by seats, berths, or other 
protrusions (including seatbacks in any 

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